If the force of friction acting on a sliding crate is 79 N, how much force must be applied to maintain a constant velocity? 79N so...
What will be the net force acting on the crate?
What will be the acceleration?
To find the amount of force needed to maintain a constant velocity, we need to realize that the force of friction is acting in the opposite direction of the motion. Therefore, the force needed to counteract this force of friction is equal in magnitude but opposite in direction.
So, to maintain a constant velocity, we need to apply a force equal to the force of friction, which is 79 N, in the direction of motion.
Now, let's answer the other two questions:
1. Net force acting on the crate:
The net force is the vector sum of all the forces acting on an object. In this case, the only force acting on the crate is the force of friction, which is 79 N. Since there are no other forces, the net force would also be 79 N.
2. Acceleration:
To determine the acceleration, we can use Newton's second law: F = ma, where F is the net force and a is the acceleration. Rearranging the formula, we can find the acceleration as a = F/m.
In this case, we only know the net force (79 N), but we don't have information about the mass of the crate. Without knowing the mass, we can't determine the acceleration accurately. The acceleration would depend on the mass of the crate.